本文選題：高速水稻插秧機(jī) + 齒輪傳動(dòng)��； 參考：《山東理工大學(xué)》2015年碩士論文

【摘要】：乘坐式高速插秧機(jī)采取四輪驅(qū)動(dòng),后橋工作狀況的好壞將直接影響到整個(gè)插秧機(jī)的行走速度和田間作業(yè)質(zhì)量。齒輪動(dòng)力學(xué)研究的目的是為了優(yōu)化整個(gè)齒輪傳動(dòng)系統(tǒng),通過(guò)動(dòng)力學(xué)方程的模擬更準(zhǔn)確的掌握齒輪傳動(dòng)過(guò)程中的動(dòng)力學(xué)特性,從而為優(yōu)化設(shè)計(jì)、提高齒輪的承載能力和安全性提供有效的理論參考。本文在簡(jiǎn)單的分析比較國(guó)內(nèi)外水稻插秧機(jī)發(fā)展過(guò)程的基礎(chǔ)上,依據(jù)機(jī)構(gòu)學(xué)原理,采用理論分析與仿真分析相結(jié)合的方法,對(duì)后橋整體結(jié)構(gòu)和關(guān)鍵部件進(jìn)行了優(yōu)化設(shè)計(jì)。本文主要研究?jī)?nèi)容及結(jié)論如下:(1)在簡(jiǎn)單的分析比較當(dāng)前國(guó)內(nèi)外齒輪動(dòng)力學(xué)研究的基礎(chǔ)上,利用瑞利法原理推導(dǎo)出了齒輪與軸裝配時(shí)的等效質(zhì)量計(jì)算公式,并研究探討了動(dòng)力學(xué)模型建立過(guò)程中的相關(guān)參數(shù):等效剛度、等效阻尼等。最后通過(guò)計(jì)算給出了矩陣形式的單級(jí)齒輪副動(dòng)力學(xué)模型。對(duì)齒輪傳動(dòng)系統(tǒng)進(jìn)行了深入研究。后橋齒輪傳動(dòng)系統(tǒng)由十個(gè)齒輪組成,為保證傳動(dòng)可靠性,對(duì)齒輪傳動(dòng)系統(tǒng)關(guān)鍵部件進(jìn)行了動(dòng)力學(xué)研究,分析了大負(fù)荷工況下傳動(dòng)系統(tǒng)受力情況,為設(shè)計(jì)可靠的齒輪傳動(dòng)系統(tǒng)提供了設(shè)計(jì)依據(jù)。(2)設(shè)計(jì)了后橋輪邊離合器減速制動(dòng)系統(tǒng),利用該系統(tǒng)能夠完成插秧機(jī)左右輪的非同步制動(dòng),從而完成插秧機(jī)的原地轉(zhuǎn)向,而且可以解決田間工作時(shí)動(dòng)力不足的問(wèn)題。(3)對(duì)本文研究設(shè)計(jì)的后橋行走系統(tǒng)的關(guān)鍵零部件進(jìn)行了三維建模和虛擬裝配,并對(duì)建立的后橋齒輪傳動(dòng)系統(tǒng)進(jìn)行了ADAMS運(yùn)動(dòng)學(xué)仿真,通過(guò)分析各級(jí)齒輪間嚙合力的大小、各齒輪的角速度曲線,計(jì)算得該齒輪傳動(dòng)系統(tǒng)的傳動(dòng)效率,進(jìn)一步驗(yàn)證后橋齒輪傳動(dòng)系統(tǒng)設(shè)計(jì)的合理性。(4)為了了解插秧機(jī)后橋齒輪傳動(dòng)過(guò)程中,齒輪的振動(dòng)情況,采用ANSYS有限元分析軟件對(duì)插秧機(jī)后橋齒輪傳動(dòng)系統(tǒng)中的關(guān)鍵齒輪進(jìn)行模態(tài)分析,通過(guò)研究其固有頻率,并與插秧機(jī)田間作業(yè)時(shí)的實(shí)際工況下振動(dòng)情況相比較,驗(yàn)證了小齒輪設(shè)計(jì)的可行性,為后橋齒輪傳動(dòng)系統(tǒng)中齒輪的結(jié)構(gòu)優(yōu)化設(shè)計(jì)提供理論依據(jù)。
[Abstract]:The riding high speed transplanter adopts four wheel drive, and the working condition of the rear axle will directly affect the walking speed of the whole transplanter and the quality of the field operation. The purpose of the gear dynamics research is to optimize the whole gear transmission system, to master the dynamic characteristics of the gear transmission process more accurately through the simulation of the dynamic equation, so as to optimize the design. Improve the bearing capacity and safety of gears to provide an effective theoretical reference. On the basis of simple analysis and comparison of the development process of rice transplanter at home and abroad and according to the principle of mechanism, this paper optimizes the design of the whole structure and key components of the rear axle by combining theoretical analysis with simulation analysis. The main contents and conclusions of this paper are as follows: (1) on the basis of simple analysis and comparison of the current research on gear dynamics at home and abroad, the equivalent mass calculation formula for gear and shaft assembly is derived by using the Rayleigh principle. The parameters such as equivalent stiffness, equivalent damping and so on are discussed. Finally, the dynamic model of single stage gear pair in matrix form is given by calculation. The gear transmission system is studied deeply. The rear axle gear transmission system is composed of ten gears. In order to ensure the transmission reliability, the dynamics of the key parts of the gear transmission system is studied, and the mechanical condition of the transmission system under the heavy load condition is analyzed. This paper provides a design basis for designing reliable gear transmission system. (2) the rear axle wheel side clutch deceleration braking system is designed. The system can be used to complete the non-synchronous braking of the left and right wheels of the transplanter and thus complete the in-situ steering of the transplanter. The key parts of the rear axle walking system studied and designed in this paper are modeled and virtual assembled, and the ADAMS kinematics simulation of the rear axle gear transmission system is carried out. The transmission efficiency of the gear transmission system is calculated by analyzing the meshing force between different gears and the angular velocity curve of each gear. Further verify the rationality of the design of rear axle gear transmission system in order to understand the vibration of the gear during the transmission process of the rear axle gear of the rice transplanter, The modal analysis of the key gears in the rear axle gear transmission system of rice transplanter was carried out by using ANSYS finite element analysis software. The natural frequency of the gear was studied and compared with the vibration under the actual working conditions of the transplanter in the field operation. The feasibility of pinion design is verified, which provides a theoretical basis for the optimization design of gear structure in rear axle gear transmission system.
【學(xué)位授予單位】：山東理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S223.91

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